System 2 – PQ40 used in 3-channel mode with high-pass main speakers and low-pass subwoofer.
Note: Although shown as 2-channel, the source unit may be either 2 or 4-channel depending on the
setting of the 2/4 channel switch.
System 3 – PQ40 used in 4-channel mode with 2 channels high-pass, 2 channels low-pass or
bandpass. Depending on the crossover frequency chosen, this configuration may be used for
satellite/subwoofer operation or to bi-amp a midrange/tweeter combination as shown.
Note: Although shown as 2-channel, the source unit may be either 2 or 4-channel depending on the
setting of the 2/4 channel switch.
digital crossover frequency display
To facilitate quicker system tuning, we have incorporated a digital display that shows the crossover
frequency for each crossover section, including the lowpass crossover for the constant bass circuit.
Push the select switch to scroll through the different sections, and a blue led will indicate which
crossover is currently displayed.
Level controls – Independent level controls for channels 1/2, 3/4 adjust the input
sensitivity from 100 mV to 8 VRMS.
Note: When crossover 3/4 output is selected for channels 1/2, the 3/4 level control adjusts the
output level for channels 1/2 and 3/4 simultaneously.
Output– Three position switches determine the output configuration. Each stereo pair of channels can
be configured in either stereo, summed-bridged and bridged-mono.
When the switch is in the left position, the output channels are configured
for stereo operation.
When the switch is in the center position, the output channels are configured
for summed mono bridged operation by mixing the left and right input
signals together.
When the switch is in the right position, the output channels are configured
for a bridged mono output using a single RCA input. Ch 1 input is used for
channels 1 & 2 and ch 4 input is used for channels 3 & 4.
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